Fix setup:db:status not recognizing JSON type in MariaDB

[lbajsarowicz]

Description (*)

Fixes bin/magento setup:db:status incorrectly reporting schema mismatches for JSON columns when using MariaDB.

Root Cause: When reading column definitions from information_schema.COLUMNS, MariaDB reports JSON columns with DATA_TYPE = 'longtext' instead of json. This causes the schema comparison to always fail because the declared schema says json but the actual database reports longtext.

Solution: Query information_schema.CHECK_CONSTRAINTS to find columns with json_valid() CHECK constraints (which MariaDB automatically adds for JSON columns) and correct their type from longtext to json before comparison.

Related Pull Requests

Fixed Issues (if relevant)

1. Fixes bin/magento setup:db:status does not recognize JSON type #38278

Manual testing scenarios (*)

1. Set up a Magento installation with MariaDB
2. Create or use a table with JSON columns (e.g., quote table has JSON columns in recent versions)
3. Run bin/magento setup:db:status
4. Verify no false positive schema mismatch errors for JSON columns

Questions or comments

Contribution checklist (*)

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• All new or changed code is covered with unit/integration tests (if applicable)
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• All automated tests passed successfully (all builds are green)

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[lbajsarowicz]

@magento run all tests